Datasheet

AD5757 Data Sheet
Rev. D | Page 4 of 44
DETAILED FUNCTIONAL BLOCK DIAGRAM
AD5757
AGND
AV
DD
+15V
AV
CC
5.0V
DV
DD
DGND
LDAC
CLEAR
SCLK
SDIN
SYNC
SDO
FAULT
DC-TO-DC
CONVERTER
POWER
CONTROL
INPUT
SHIFT
REGISTER
AND
CONTROL
STATUS
REGISTER
POWER-ON
RESET
REFERENCE
BUFFERS
DAC
REG A
INPUT
REG A
VREF
WATCHDOG
TIMER
(SPI ACTIVITY)
ALERT
REFOUT
REFIN
AD1
AD0
DAC A
16
16
SW
A
V
BOOST_A
GAIN REG A
OFFSET REG A
R1
R2 R3
R
SET_A
CHARTA
I
OUT_B
, I
OUT_C
, I
OUT_D
R
SET_B
, R
SET_C
, R
SET_D
CHARTB, CHARTC, CHARTD
I
OUT_A
DAC CHANNEL B
DAC CHANNEL A
DAC CHANNEL C
DAC CHANNEL D
SW
B
, SW
C
, SW
D
V
BOOST_B
,V
BOOST_C
,V
BOOST_D
7.4V TO 29.5V
REG
V
SEN1
V
SEN2
+
09225-001
Figure 2.